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8105896213 = 31261480523
BaseRepresentation
bin1111000110010011…
…00010100100010101
3202220220200012012021
413203021202210111
5113100102134323
63420201253141
7404604660322
oct74311424425
922826605167
108105896213
11348a626888
1216a27941b1
139c246c5bc
1456c791b49
1532696705d
hex1e3262915

8105896213 has 4 divisors (see below), whose sum is σ = 8367376768. Its totient is φ = 7844415660.

The previous prime is 8105896207. The next prime is 8105896273. The reversal of 8105896213 is 3126985018.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3126985018 = 21563492509.

It is a cyclic number.

It is not a de Polignac number, because 8105896213 - 29 = 8105895701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8105896213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8105896273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130740231 + ... + 130740292.

It is an arithmetic number, because the mean of its divisors is an integer number (2091844192).

Almost surely, 28105896213 is an apocalyptic number.

It is an amenable number.

8105896213 is a deficient number, since it is larger than the sum of its proper divisors (261480555).

8105896213 is a wasteful number, since it uses less digits than its factorization.

8105896213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261480554.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 8105896213 is about 90032.7507799245. The cubic root of 8105896213 is about 2008.7860307294.

The spelling of 8105896213 in words is "eight billion, one hundred five million, eight hundred ninety-six thousand, two hundred thirteen".

Divisors: 1 31 261480523 8105896213